Calling device



H. H. IDE

CALLING DEVICE July 10, 1928.

Filed Dec. 18, 192p r110 by the proper 1t Patented July 1Q, 1928, I157%,39'2} I W T-EDP- TA T E Perms er I- IARRY H IDE, or LA AnGnILINoIs, essisnoi To KELLOQG SWITCH BOARD Ania SU PI LY COMPANY, FCHICAGO, ILLINOIS, A CORPORATIONDF ,ILLINOIs. CALLING ianvion. I lApplication iiled December. 18,1920. 'seri iio; 431,561. 'My'inventionrelates to" 'calling devices lustrate the ap-plication of niy' inventionto" such are used-1n automaticandsemi-ai h'eealhn'g devicef" y v lt0matc teleph'onesystems-for; controlling ig jliris alsectional' vie'wo'fithe" motor the ai'itoniatic switches which are located at, springandits'supporting'parts; Y a 5 the central ofiice and are'used forest'ablisl1-* 1 F 1g. 6 1s a disassembled perspectivevieweu stable motordevice and itsasso ing connections. between calling and called f hefld]subscribersfand has'to do more particularly i 'p' d v 4 wit-h",tl1enew*ancl' zimproved motor spring a Fig. 7 is a viewsimilar to:Fig.15,but: with v adj tj gme n for a calling device whe v the motor springtension-mg devicejin its 'dej v v ension maybe given to the pressedposition "to permit adjustment of 65 said'moto-r, spring. them'otorspring. p r Calling devices of the art are provided Asmy'inventi nrelates particularly to a 1 with motor springs ivhich'are placed undermotor spring tensioning device, a detailed -a-;certaintensi'on1 W/Vhenthe setting member dBSOIiPtiOIi v0f e O Ii S f the lling of-the'caningdevice has been advaneed,.the i e ELSillUStUItBCl in t c p ny ng 'sad'setting member is restoredto normal g l i fl g' Q y Such l by *means'of the said motor spring, and a ip on i y'f a u a d c train ofgearing'associated with the calling plet'e understanding of theadjustable motor"- device 'is set in;moti0n, by the return of thedevice. For amore complete understanding setting member to,vnormal','tor operate the of the calling'device,referencemay beihad' 75impulse mechanism, thereby transmitting ,v to Patent No. 1,501,281,issued July 15,1924. .predeterminednumber of; impulses tothe au-Referring now more in detailto myin tqniati ith' g i- 'Va i g-am th d hvention as illustrated, the calling device as;

e n e n lb'y d -fo f dj gting'ethg. t r soeiated withthe adjustablevmotor device. 7 spring of the, calling device to its pro er comprlses amain mountingplate Awhich 89 tension, all .of which 'are somewhat oom h;supports the calling device mechanism; ai eated; and iiece sitatespecia'ltools'for opere fingenholdactuati'ng -member B {and "a ating theadjusting means to place thermotor ridgeplate C for supporting'the partsof pii u d p o r t j g' the calling device. 'The' main'shait't 4 eX- I305* A feature of invention is the provision tendsth'roilgh a Suiab ebea ng sleeve 5 8-1 f a: w nd impro'ye'dadjustable i g cured to the mainmounting plate A and a tension'means-whi'chis simplein construe i gSleeve 6 Which is ecured to the,

tion and in which no special tools are needed ridge plate C in anysuitable vmanne said for adjusting the tension of the motor shaft lrotating the said bearings 5- and 6. spring. The'motor springtensioni'ng d A sleeve 7 is provided which-is of size-to oo 1 viceofmy'invention'embodies desirable fea-Q V the Shaft Said 1 6 When il'iltures"'a-nd advantages in-a simple, 'eflicient pl r ting against thebearing 5. The" and economical'manner/ These features will finger-holdactuating member B 'is secured be more fully'des'cribed in the ensuingspeci-r h fOIWardend of the shaft 4 by means ficationr I p of a screw 8,which screw has screw-thread '95 -f nd a more complete understanding ofd ng g n i a sui l pp o fi my invention, reference may lie-had to' th'e'in the'forward end of the main shaft 49 accompanying drawing. in whichIillustrate T e O f d' l 6nd f be ef u y" the' mot-or springtensioning-"device of my to m a q a p y 'd fi g -v invention, in theseveral views, operati'vely hold actuating member Bis provided [with100, associated" with -the calling device; and inan-openingto"conformwith the squared end hi h lug n ia har t g'i th ofthesha-ft hand thissquared portionoI" t I eralviews denote li'kei arts,andin which the shaft 4- and opening-in. the finger-hold 1 ,V

I {Fig-L faceview ofi the"callingidevice'; ctuating ine'inber B thussecures the said" M! v gFiggjflEZ f-is 'a 'ear viewof Fi'g.1," showingmember 13 against rotation on the] shaft 51 1 5 T i i is i l L Wllllilti'saolvanced from its normal po n Fig.8 isljan interior 'iew of thccallin'g tion'. :The finger-hold actuating memberidevice,showingthe-mechanism of the same; is provided with aplurality ofopenings or, {Fig 1 is a side view of the calling device finger-holdsfor the usual advancing put- With parts-broken away to more clearly il-lposes, and a stationary finger-stop 9,1sec u'redi: Q

to the mounting plate A by means of the screws 10, is provided so thatwhen the fin ger-hold actuating member B is advanced in a clockwisedirection, the advancing finger of the operator engages the stationarystop 9 and arrests further movement of the actuating member 13.

The motor spring tQDSlOI11I1g,Cl8V1C6 MS COlIlPlfiSQS a spiralmotorspring 11 which is coiled ahout bearing and the sleeve 37, and the-end12 01 the motor spring' ll isinserted into, opening 13 in the mainmounting plate A; A disc 73 is provided having aplurality I u V a y l ornotches l l cutin, its periphery 10. it is also provided with acentrally located orifice 16 or a size to permit the said disc .73 to heslipped over the sleeve '7 and permit its rotation about thesleeve forpurposes as Wlll piescntlyhe descr bed. -20

sha'i't il and is held in place bymeans of ascrew 22, which screw hasscrew-threaded engagement with a suitable tapped orifice in the end ofthe shaft- 4; r I j V The motorspring .11 rests between the race or the'main nounting plate A, and the disc i 7 3, and its longitud nal tensionis suchthat ,it torcesthe said disc 7 3 against the bottom motorspi'ingl'l until the notch 14 in the pe-' riphery 15 0f" the disc 7 3 inwhich the angurace 23' of the'detent 19. The detentis provided with anangular extension 2 1 which is ot a size to permit it to rest in one ofa plurality ofnotches 1a in the periphery 15 'ot' th'edisc To adjust themotor spring 11'to its proper torsional tension, the disc I 73 graspedby the fingers of the person ad-' asting the said spring 11 and forceddownward against the longitudinal tensionot the lar extension 24 of thedetent 19 rested clears the same as clearly illustrated in Fig.

Now when the disc 73 is in this aosition. and F 1 5,

as it is loosely mounted upon the sleeve 7, the

said disc 73 may be rotated in a counter:

clockwise direction by referring to Fig' 2, andas the end 1r of themotor spring 11 is inserted in the orifice 18 in the disc 73,,this

counter-clockwise rotation of the disc 73 winds up the motor spring 11to give it more torsional tension. Now, when a notch 1 1 in the disc 73registers with the angular entenj sion 2 1 of the detent"19, thedownivardpres sure-upon the disc 73 may be released and the now movedupward due to th'e l,on'-' g V (l tension or the spring 11, allowingtheangul'arextension 24- ot the detent 19 to enter'a. notch letin thedisc 73. The face 25' t 1e disc 73 rests against thebottoni race 23 ot'the detent 19", which face 23 actsas a stop for the said disc 73' 'whenforced upward by the longitudinaltension of the motor spring 11. Tolessen the tension ot the motor spring 11 the disc 73 is forceddowirva-rth-as b'eitofre described, against the longi tudinal tcnsion or thespring- 11, depressing the same until the angular extension 24 of thedetent 19 clears the notches 14 in the said drama This permits the disc73 to be rotated in a clockwise direction, by reterring to r Fig, 2, andwhen a notch 14 or the disc 7 3 registers with the angular extension 2tof the detent 19 the downward pressure released rrom the said disc 73and the longit-udinal tension of the motor spring ll forces the discupward until the extension 24: again enters a particular notch'ls in thedisc 73, thus holding themotor spring to its adjusted torsional tension.7 v v r The detent 19 when the calling device is at normal, engages aninsulating butter located on, one of a pair of shunt springs'as illus-:trated "in Figure 2 of the accompanying drawing. The two middle contactsprings are normally held apart by the engagement of the detent 19 andthe butter; V] hen the shart is rotated the detent 19; rotates with itand disengages the buffer and allows, the contact springs to engage eachother to form a shunt circuit to short circuit the subs'crib-' apparatuswhile the impulses'are being sent. F or a fuller description ofthcapparatus reference may be hadto Patent Number 1,501,281 issued to meJuly l o, 1924? v i Mounted upon the nainshafteris a gear wheel "30,which gear wheel 30 7in turn meshes with a pinion 31, which'pinion 31 isintegrally formed with the shafti32, the said" shaft 32 also carryingthe governor mcha nism G or the calling device. The shaft 1 32 alsocarries a gear wheel 33, which meshes witha pinion 34 integrally formedupon'the' shaft 35, which shaft 35 also carries the" cam member 36 foropening and closing the impulse springs I of the ,calling device: Thistrain I of gearingthus outlined is connected to the main sha'tt & to thegovernor mechanisn 'G- a'nd impulse mech anisni I, the said governor Gpermit-f ting the return movement or the finger-hold actuating member Bat a predetermined speed through the agency of v the motor spring 11.Now, when the finger-hold ac tuati'ngmember B is rotated in a clockwisedirection to 'se't the calling device to permit a certain numberof"iinpulses the gear wheel13O "and the float-ingwratchet" 46 which areloosely-mounted upon; the main shaft 1,;I'111ai11' stationary while th'eshafts and the dog 131 are operated ina-fclocliwise 125, direction. sothat tl1e :arms37,' 38an'd 39 ride over the wings 40 of the floatingratchet 16; until the arms 37 and 38rest'in' the desired wing 100f the,floating ratcliet'dti. Due to 7' the tac t'that the detent 19- issecured t5 the 136' shaft- 4: by ineans of its squared opening 20 "andscrew 22, the said detent19 is alsocarried with the shaft- 4., and asthe angular extension 24 engage's'a notch 14 in the disc- 73, the disc 73x-is' alsofcarried with the saidmain shaft 4, and as the end 17 "of themotor spring 11 rests in the orifice 1801? the said-disc 78, it bringsabout the winding up of the motor spring 11 upon the forward. rotationof the finger-hold actuating member B. "Upon the return movement of "thefinger-hold actuating member. 13, the shaft .4 and dog 131, all of;which aresecured to the shaft 4, also return therewith, as th'e arms 37and 38 of the dog131nowengage the desired wing 40 0f 'theratchet 46,

Do'wnwardly extending arms 41 and 4201 the ratchet 46 extendintoithe'orifices-td and 44c in'the gear wheel and the gear wheel 30 isthus rotated-therewith, and through the mediumjoftheztrain of'ge'aringthe motion is transmitted to the governor shaft 33"and the"camactu'ating shaft to,

transmit a group of impulses. I

fWhile I have illustrated anddescribed my invention operating inconnection with a certain type of automatic calling device, I do notwish to belimited to the same, as my invention maybe adapted tocooperate in structure as shown, but aim to within the spirit andscopeof the telephone systems, comprising a rotary.

shaft, a finger hold device to rotate said shaft, a coil spring torotate said shaft when released and transmit the impulses, said springhaving an unad ustable connection with a memberof said device, a secondmember of said device connected tosaid spring and rotatable by hand withrespect to said shaft, to adjust the'torsion of said spring, apparatusincluding a radially extending detent fixed to the shaft,,and meansonsaid second member to be engaged thereby to hold said spring under anyof its adjustable torsions with respect to the shaft, and contactsprings controlled by said de-.

tent.

. 2. In an impulse device;- for automatic telephone systems, thecombination with a rotary shaft to transmit the impulses, of a spring todrive said shaft, two members engaging one another one fast with theshaft .and adapted to control a pair of contact springs the other fastwith the spring, said member fast with said spring being adapted tainsaid as 7 come.

vto-bev disengaged by hand. from said member.

fast. @withthe. shaft and rotated; to adjust the torsion of saidspringand to again me gage said member, fast with-the'shaft-to maintain.achanged torsion of the spring on the shaft, 1 1 i a The combinationwith l and asupport with a bearin'g therefor, of, a

coil springabout said shaft having oneiend in fixedf'relation to saidsupport and=the= other enda'djustably fixed tosaidshaf-tby; j i

means comprisinga disk rotatableby hand. 1'

with respect to said shaft, said disk pro. vided with peripheral meansfor engagement by a detent fixed with .respect'tosaid shaft, said meansvand said detent serving to adjust and maintain any adjustment madeofthetorsion of said spring on the shaft, and con-R tact springsi'controlledv by said' detent." 4. Inan impulsesending device thecornbination-ofa rotatable'shaft, acoil spring 'for rotating said shaftback to, a normal point, a detent fixed to said shaft havingla'depending portion,'a pair of contact springs controlled. by said detent,a member frotatable with relation to said-shaft-and'connect-v ed to oneend of said. spring, said member adapted tobe rotarily adjustedibyhandto increase ordecrease; the torsional fo-rceof said spring, and meanscomprlsedin said member for operative engagement by the dependingportion ofsaid detent to maintensionsfi j I 5. In an inipulse'sendingdevice the combinatlon of a rotary shaft and a' support spring underanyof its adjustable.

therefor a Spring rotate said shaft hav-.

ing one end fast to the support, and the other end adj ustably connectedtothe shaft,

the connecting means comprising a part fixed 'withthe shaft having adepending'portion and a part fixed with the spring,'ha v-,

'ing a plurality ofperipheral notches adaptcd to be engaged by saiddepending portion, said parts extending radially from the shaft toengage one another andadapted .to be pressed apart by hand todisengageto allow thetorsion of the "spring to the shaft to be adjusted, and theparts re-engaged to allow said depending portion to enter one of saidspringinits adjustedtorsion, and a pair of contact springs controlled byfixedto the shaft.

6. An impulse transmitter for automatic telephone systems comprisingarotarysha'ft. means for rotating said shaft, a motor spring forsaidflshaft for rotating the samewhen means are released to restore saidshaft, a fixed connection for one'enol of said spring with a member ofsaid impulse transmitter', a disk slidably. and rotatably sup peripheralnotches to. maintain the said the saidpart ported on said shaft andconnected to the.

other end of said spring and rotatable by hand to adjust the torsion ofsaid motor spring, a detent fixed to said shaft control llng a pair ofcontaot springs and engaging means on said disk including peripheralnotches adaptedlto be engaged by a depending portionlof said detent tohold said motor spring in an adjusted torsion.

ofsaid impulse transmitter, a disk slidably and rotatably supported onsaid shaft and connected to the other end of said-motor spring, a detentfixed to said shaft, a pair of contact springs controlled-by said dctentengaging means on said disk comprising peripheral notches adapted to beengaged'by a depending portion of said detent and held in this engagingposition by means of the longitudinal tension of saidmotor spring, saiddisk being adapted to be moved longitudinally in relation to' said shaftby'hand to permit the torsion of the spring to be adjusted by rotatingthe disk and to permit said disk to be moved to'again be engaged bysaid-detent to maintain the adjustedtorsion of said motor spring.

8. In'an impulse transmitter of the class described comprising a rotaryshaft, a motor spring fonrotating said shaft having one end fixed to amember of said impulse trans-f said shaft forming the connecting meansbetween said. spring and shaft, said disk-be; ing held normally inengagement With said detent under longitudinal tension of said spring tohold said spring in an adjusted torsion, said disk being adapted to bedisengaged from said detent by downward pressure by hand against the.longitudinal pressure of said spring and rotated independently of saidshaft to permit the torsion of said spring to be increasedcorrodecreased, said longitudinal tension of said springv again-forcingsaid disk into ,enga'gement With said detentlwhenthe desired. ad-

justnient of said spring is obtained'to permit said detent .to hold saidspring in its adjusted torsion and apair of contact springs controlledby said detent.- 1

Signed by me atChicago, in the county of Cook and State of Illinois, ofDecember, 1920.

HARR a; inn."

this 16th day

